Wireless Security Alarm

I am also looking for an alarm system for my business

Installing the cameras, sensors, wires, etc and then connecting it all to a main computer and then set up the wireless alerting devices - notifying you and then the police department? Is this a difficult project but worthwhile since there is no need for a monthly fee that you pay with other security systems?

Currently I am looking at installing a security camera system in my hotel property. I am looking at High Definition camera and wireless transmission.

What are the best security camera systems in the market??
Price is not an object.

I am looking for manufacturers or security systems that can produce an alarm system that can cover a thousand homes in an estate. An alarm system programmed to trigger once pressed and would send the signal to a security office showing the house number